Birkenstock Arizona Big Buckle High Shine Black Patent Leather Sandals 39 8-8.5. The legendary two-strap design from BIRKENSTOCK with amplified buckle accent - the Arizona Big Buckle. The Big Buckle version features a large, elegant buckle creating a bold yet minimalist design. The semi-exquisite footbed is fully lined with soft piumato leather, making it exceptionally comfortable. The upper is made from high-quality natural leather with a high shine finish. Anatomically shaped cork-latex footbed; semi-exquisite Upper: natural leather with a high shine finish Footbed lining: piumato leather Sole: EVA Details: two straps, each with a large, individually adjustable metal pin buckle; color-coordinated details Worn once.